12results about How to "Improve sampling effect" patented technology

The utility model relates to a matching structure of an inner knife and an outer knife of a biopsy needle. The matching structure comprises an inner knife tube and an outer needle tube sleeved outside the inner knife tube, an expansion pipe section capable of containing more collected tissues is arranged on the front side of the inner knife pipe, and the lower peripheral side pipe wall, corresponding to the pipe section, of the tissue suction inlet expands outwards to form an expansion groove structure; a fluid conveying channel is formed between the expansion groove structure and the outer wall of the expansion pipe section; the rear section of the inner knife tube is in clearance fit with the rear section of the outer needle tube to form an annular conveying cavity communicated with the fluid conveying channel. According to the utility model, the expansion tube section of the inner knife tube is matched with the expansion groove structure of the outer needle tube, so that the sample collection space of the inner knife tube is maximized, and the sampling effect is improved; while the outer wall surface of the expansion tube section is tightly attached to the inner wall surface of the outer needle tube, the gap is minimized, meanwhile, the expansion groove structure of the outer needle tube can be communicated with the annular conveying cavity, fluid communication is ensured, and cutter blockage caused by the fact that fluid cannot be communicated after tissue cutting is completed is avoided.

The application discloses a sampler and a sampling vehicle. The sampler comprises a sampling cylinder, a sampling assembly, a sample falling pipe, a sample discarding pipe and a cutter. The sampling cylinder has an inner cavity. An upper end of the sampling cylinder is provided with a sample outlet. The sampling assembly is rotatably arranged in the inner cavity. The sample falling pipe is arranged outside the sampling cylinder. One end of the sample falling pipe is communicated with the sample outlet so that the sample collected by the sampling assembly falls into the sample falling pipe. The length direction of the sample falling pipe intersects with the length direction of the sampling cylinder at an angle. The sample falling pipe is provided with a sample discarding opening. The orientation of the sample discarding opening is orthogonal to the length direction of the sampling cylinder. The sample discarding pipe is arranged on one side of the sampling cylinder and is communicated with the sample discarding opening. The cutter is arranged in the sample falling pipe and moves between a sampling position and a sample discarding position so as to cut the sample falling into the sample falling pipe. When the cutter is at the sampling position, the sample outlet is disconnected with the sample discarding opening. When the cutter is at the sample discarding position, the sample outlet is communicated with the sample discarding opening. The sampler has the advantages of good sub-division effect and good vehicle performance.

The invention provides a high-speed interface data sampling circuit and a chip. A phase-locked loop of the high-speed interface data sampling circuit outputs a first clock signal and a second clock signal multiplied by the first clock signal based on a received reference clock signal; the logic processing module carries out multi-stage trigger sampling on the first clock signal according to the second clock signal to obtain a target clock signal, and carries out multi-stage trigger sampling on the received data signal based on the target clock signal, so that the target clock signal is sampled at a specified position of the data signal; the problem of error codes caused by overlarge phase difference between a clock signal and a data signal can be effectively avoided, so that a better sampling effect and a lower error rate can be obtained during high-speed data transmission; meanwhile, the sampling clock and the control clock for parallel-serial conversion can be cooperatively adjusted in phase, so that time sequence deviation in a sampling path and an output path is compensated, and stable and reliable parallel data sampling and serial output of the high-speed interface can still be realized in different rate modes.

The utility model discloses a sealed type sampling membrane support and VOCs on-line monitoring equipment, belongs to the environmental monitoring technical field, the sealed type sampling membrane support comprises a membrane support block and a membrane pressing block, a membrane tray is arranged between the membrane support block and the membrane pressing block, the membrane tray is cylindrical, the bottom of the membrane tray is of a porous structure, and the membrane pressing block is arranged on the membrane tray. A film pressing ring which is in a closed ring shape after being installed is arranged in the film tray, a limiting protrusion is arranged on the inner side wall of the film tray, and the lower surface of the limiting protrusion is an inclined face. A first cavity is formed between the film supporting block and the film tray, a second cavity is formed between the film tray and the film pressing block, sealing devices are arranged on the contact face of the film supporting block and the film tray and the contact face of the film tray and the film pressing block, an air inlet connector is arranged on the film supporting block, and an air outlet connector is arranged on the film pressing block. And locking devices are arranged on the outer sides of the film supporting block and the film pressing block. The sealed sampling membrane support and the VOCs on-line monitoring equipment disclosed by the utility model are good in sealing performance and accurate in sampling value.

The utility model discloses a sampling detection device for polyurethane production. The sampling detection device comprises a sampling barrel and a raised head, by adopting the pull rod, the sealing piece and the sample box, in the actual use process, a worker can directly insert the sampling barrel into polyurethane powder needing to be sampled through the convex head at the bottom, then the pull rod with the corresponding length is pulled through the indication block, and at the moment, the pull rod compresses the spring; according to the polyurethane powder sampling device, a plurality of groups of sample boxes and pull rods are arranged and drive a sealing piece to move in the inner wall of a sampling barrel, so that the sealing piece is separated from a feeding hole, the polyurethane powder naturally slides into the sample boxes at the moment, and as the sample boxes and the pull rods are arranged and the positions of the sample boxes are different, multiple depths can be sampled at one time, and the sampling efficiency is improved. The sampling device is not limited to single-time single-type sampling any more, subsequent repeated insertion sampling is not needed, the labor intensity of personnel is reduced, the practicability of the structure is improved, and the sampling device has the advantages of multiple sampling, good sampling effect and high practicability.

The utility model provides a sampling device. The sampling device comprises a frame body; the bearing structure is arranged on the frame body in a position-adjustable manner; the sampling assembly comprises a sampling structure and a sleeving structure, the sampling structure is arranged on the bearing structure, the sleeving structure sleeves the sampling structure, and the sampling structure is rotatably arranged to drive the sleeving structure to rotate; wherein the sleeving structure is provided with a feeding port, the sampling structure is provided with a feeding groove, and the sampling structure is provided with a feeding position enabling the feeding groove to be communicated with the feeding port and a blocking position blocking the feeding port. The glass fiber feeding device effectively solves the problem that in the prior art, the glass fiber raw material taking effect of workers is poor.

The utility model relates to the technical field of coal sampling, and particularly discloses a coal pile stratified sampling device which comprises an outer cylinder mechanism, a sampling mechanism assembled in the outer cylinder mechanism, and a material shifting mechanism assembled in the sampling mechanism, the outer barrel mechanism comprises an inserting barrel, and a feeding opening is formed in one side of the inserting barrel; the sampling mechanism comprises a sampling cylinder rotationally mounted in the insertion cylinder, a material storage cavity is formed in the sampling cylinder, and a sampling opening corresponding to the feeding opening is formed in one side of the material storage cavity; the material stirring mechanism comprises a drawing rod slidably mounted in the material storage cavity, a fixed pile is fixedly mounted on one side of the drawing rod, and a material stirring blade corresponding to the sampling port is slidably mounted on one side of the fixed pile; according to the coal pile sampling device, coal at different layers in a coal pile can be sampled at the same time at a time, so that the sampling time is effectively saved, the sampling efficiency is improved, and more convenience is brought to the sampling work.

The utility model relates to the related technical field of water body sampling, in particular to a water body sampling and filtering integrated device which comprises a box body and a filtering mechanism, the filtering mechanism is arranged on one side of the surface of the box body, and a storage mechanism is arranged at one end of the box body. According to the water body sampling and filtering integrated device, through the arrangement of the filtering mechanism, after a storage pipe is installed, a micro water pump is started, the micro water pump can provide suction force and drive liquid to flow through the filtering mechanism, the liquid enters a filtering pipe through an adsorption head, and the liquid passes through a filtering frame and filtering nets at a first groove, the number of the filtering nets is two, and the pore diameters are different; impurities of different sizes can be filtered in a classified mode, filtered liquid passes through the telescopic pipe and the connecting pipe and enters the storage pipe through the micro water pump, so that sampling and basic filtering are completed, meanwhile, the telescopic pipe enables the filtering mechanism to have a certain adjusting range in the sampling process, and the filtering mechanism is suitable for different working conditions.

The application discloses a kind of meter box level multi-channel indoor short-circuit fault identification method and system, this method includes: first, according to the sampling period set to meter box total incoming line and each user passage incoming line current sampling;Second, find out the current mutation value of meter box total incoming line and user passage incoming line, and record mutation time;Then compare the current mutation time of meter box total incoming line and user passage incoming line, to judge whether the current mutation value of user passage incoming line is real mutation data;Finally, based on multi-channel mutation condition analysis, identify real short-circuit data from real mutation data.Compared with prior art, the application does not need to modify hardware sampling circuit, only based on existing current channel and the sampling data of meter box total incoming line, reduce the probability of fault misjudgment by multidimensional data analysis, effectively reduce the probability of fault misjudgment, improve the reliability of indoor short-circuit fault judgment.

The utility model discloses an underground rock stratum gold mine cave top sampling device which comprises a sampling unit, a sampling unit and a control unit. The collecting unit comprises a collecting hopper and a collecting bag, the collecting hopper can be installed on the sampling rod in a sleeving mode, the tip end of the sampling rod can stretch into the collecting hopper, the collecting hopper can be unfolded to be in a hopper shape and can be folded, a collecting opening is formed in the collecting hopper, and the collecting bag is arranged on the collecting opening. The collecting hopper and the collecting bag are arranged at the sampling end of the sampling rod, samples falling from the top of a cave can be collected by the collecting hopper and enter the collecting bag, the problems that the samples fall to hurt people and fall into mud at the bottom of the cave to cause sample pollution and sample collection difficulty are well solved, the structure is simple, use is convenient, and practicability is high. The mine top sampling device can be well suitable for sampling operation of a mine top, and the collecting hopper can be folded when not used, so that the device is convenient to carry.

This utility model discloses a waste gas sulfuric acid mist sampling head with an anti-clogging structure, relating to the field of waste gas sulfuric acid mist sampling technology. The utility model includes a sampling tube, with a sampling head disposed on the left side of the sampling tube. Two limiting rings are fixedly connected to the outer surface of the sampling head. It also includes a locking mechanism disposed between the sampling head and the sampling tube, used to quickly connect the sampling head to the sampling tube; and an anti-clogging mechanism. This utility model, by setting an anti-clogging mechanism, specifically by quickly installing both a primary filter and a secondary filter on the sampling head via a plug-in connection, allows the primary filter to perform a first-stage filtration of dust particles in the waste gas during sampling, while the secondary filter performs a second-stage filtration, thereby intercepting particles in the waste gas and improving the sampling effect of waste gas sulfuric acid mist. Furthermore, the interception of fine particulate matter effectively prevents clogging of the sampling head.

This application provides a method and an apparatus for determining a virtual speaker set. The method for determining a virtual speaker set includes: determining a target virtual speaker from F preset virtual speakers based on a to-be-processed audio signal, where each of the F virtual speakers corresponds to S virtual speakers, F is a positive integer, and S is a positive integer greater than 1; and obtaining, from a preset virtual speaker distribution table, respective position information of S virtual speakers corresponding to the target virtual speaker, where the virtual speaker distribution table includes position information of K virtual speakers, the position information includes an elevation angle index and an azimuth angle index, K is a positive integer greater than 1, F≤K, and F×S≥K. This application can improve audio signal playback effect.